21891195

素因数分解:

$3^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{971}}^1$

素因数の和:1152

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 17299845

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 167, 501, 835, 971, 1503, 2505, 2913, 4509, 4855, 7515, 8739, 14565, 22545, 26217, 43695, 131085, 162157, 486471, 810785, 1459413, 2432355, 4378239, 7297065, 21891195]

約数ペア:

[(1, 21891195), (3, 7297065), (5, 4378239), (9, 2432355), (15, 1459413), (27, 810785), (45, 486471), (135, 162157), (167, 131085), (501, 43695), (835, 26217), (971, 22545), (1503, 14565), (2505, 8739), (2913, 7515), (4509, 4855)]